Rotary creasing machine



. J ly 1950- J. T. ROBINSON 1,769,466

' ROTARY CREASING MACHINE v Filed May 22, 1 29 INVEN'I'EIRZ Patented July 1,1930

.UNITED mm 'AT T- {amen JOHN T. ROBINSON, or BosToN, 'MAS'SA'cHUsnT 's,ASsrGNon o Joan ROBI ON;

- comrrmm'or BOSTON, MASSACHUSETTS, A coRronATrononMAss c SE Ts i I ROTARY cnnnsnve MAcHIivn I Application filed May 22,

This invention relates to machines for; creasing cardboard and'similar stock in the preparation of blanks which are subse-, quently folded to make boxes. e

.Machines of this general type usually comprise arframe in which a-baris rotatably mounted carrying a plurality of creasing and scoring units. Each of the creasing units includes a creasing wheel adaptedto cooperate with a'creasing rollandeachof the scoring units includes a'sharp cutter cooperating with a hardened ring to separate the blanks. The bar carrying the creasing and scoring units is provided with a reversing lever so that it may be turned from its normal operativeposition'to an inverted position in order to adjust. theposition of the creasing andscoring units or to Stock, such as sheet cardand the cooperating creasing rolls to crease the same andis separated into blanks at. the same' time by the scoring units.

been common practice to lock'the-bar car-' It has rying the" creasing and Scoring units by a pin movable by 'alatch-on the reversing lever into openings in a segment" on the frame of the machine." g

This method of locking thebar is-usually satisfactory'wherefthe machine is employed solely for scoring the stock. .011 the other hand when the machine is employed for creasing the stock the strain set up is many times as great and the customary method of locking the bar has been found unsatisfactory on account of the tendency of the bar to twist ormove due to the wear or poor fit of the parts- Asa result perfect creasing of the stock could not be accomplished afterthe machine had been in use a few, months.

It is anobject of the present inventionto overcome this difficulty and provide means for locking'the bar carrying the creasing units" so that perfect creasing can be obtained during long periods of use of the machine. In accordance with the invention the usual locking pin described may be employed for locating the bar carrying the creasing units or carried'out in various ways.

719 29. Serial No. 365,151.

.in its normal operative or inverted position and a separate additionallocking mechanism is provided. for holding the bar against movement in thedirection of .movementof the stock through the machine. 3

vention, it is to be understood that thei-nvention is not limited in its application. to

the details .of construction and arrangement of parts illustrated in the accompanying drawings, since, the invention is capable'of other embodiments and :of being practised to be understood that the phraseology .or

terminology employed herein is for the pur-" pose of descriptionand not of limitation, and it is not intended tolimit the'invention beyond the terms of the several claims hereto r Fig. 1 is a fragmentary planview of creasing machine embodying the invention; F g. 2 1s a sectlonal view taken upon the line 22 of Fig. v1; and Fig. 3 is-a detail view ofthe locking mechanism ofthe inventionin an inoperative position.

The .machine illustrated comprises" a bar 9 having trunnions 11 mounted in bearings in uprights 12 so that it may be turnedfby a reversing lever 13. A plurality of creasing devices 15 are adjustably mounted upon the slide 9 as byset Screws 16 and each is adapted to cooperate with a-creasing roll 1.7 ad

justably mountediupona shaft 18 rotatably mounted in theuprights 12and adapted to be rotated in any suitable manner (not shown).1 A suitable Scale'21 issecuredby hinges 8 to ya bar 28 extending between the uprights 12. A latch 25 pivotally mounted upona: pin'26 extending between lugs 27 on the reversing lever 18 and is connected at-it s free' end with a pin .28 adapted'to engage either or the'openings '29 or 30upfon a plate 31 suitably secured to one of the-uprights 12.

Also it is [until the pin 28': engages the opening 30m 1 theplate 31,; When-thebar'Qis located a its a normal operative position, as shoWn in The opening29 in plate 31 isarranged l x itisdesiredtQ' adjust the position of the creasing'devices *onthe bar; 9 or to -replace V, them by fotheridevices," the bar 9Iisfmoved to its inverted position by operating the at h e q e the Pin .2 ir mt p n? ing 29 jandQturning the reversing lever 13 "FigLQQ StOCk sfisfpassedfb t n h Greasy,

i V 17. in the 'dilf'ectiOn shohw n b lth la f, v

.ingdevices'15 and creasing rolls i-Inorider-that there -mayi;be 'noxmovement i ofthep bars9jduring the creasing operation "which lwillaffect the character thereof suit-' edge; :3? ofithe block adj acent the bar," 9

Fixed upon the'lshaft 44 adj acent eaoh'end thereof is an arm "10 eachofwhich is pivotally connectedat one end with one end of g link 47 the other end of each of which is pivotallyvconnected'ato a 'rWedge block 48 blocks 48; adjacent the blocks 35 may be IS U OH W moving said WGdgQ t an movableion a bearing surface 4; onthebrack :et 40 into and oiit of ;e ngagem'entwith the 1 surfaceB'Zon-onebf theblocks 35. 1 .Preferably, leach block48 is provided with an zu'pwardly extending guide; rod L 15:. movable; guide; openings formedfiin. 2a. lug "6 on Y the 'bracketAQ, Thei surfacenf of eachfofithe tapered to cooperatewith the tapered surface37 -on the latter.

-' When a: is desired was; the 1m .9111 as" normal operative. position, the lever '13 t is 'fmoveduntillthe-pin 28-engages theopening 29-iinfthefplate 131, thus locatingqthebar 9.

in: its-operativeposition." The operating leverthen" is movedfrom the-position 1, 5. shown-in Figg3jftofthat'shownain Fig. 72,

therebyturning the, shaft 44' and causing the block s/ 487 to moveralongitherbracket' 40 on J the bar: 9i'into engagement with the blocks 35." 'The cooperating. tapered surfaces upon the blocks 518i and 35 makeit possible to-itake up any play iinthe bar Qtcaused by V weargof i the partswthereofor -of the locating pin -{If it is desiredftomove th -ba 9 to its in vertedr 'positiom the lever 45 is turned from j i fthe position shown :Ei-gQ-Qitothat shown able] mechanisin is provid'ed in'faccordance, vwiththe?inventio'nffor locking thelbar 9 i l against movementiin theldirection of move flnentof the stock" Forthis purpose a block 35 is suitably secured on each of :the up rightsPIZ, asby screws 36,- at a point spaced laterally fromwtherbar 9; Preferably, the

- Wedge adapted to in 3, thereby movingthe ;block s48"out of engagement With the blocks 35 andperjmittinglthe bar 9 to be moved by means of thejreversing lever '13 to its inverted posi- V tion It vwill be noted that when the blocks tSfare either inengagement with the blocks 35 ormoved out of engagement therewith, the lever 45 is off center or inclined to a verticalplanethrough the shaft 4A and, there fore,-e2ierts its Weight to maintain the blocks 4-8 in the .movedJ position to which. they have been What r iaml is:

tionflof a frame, a bar rotatably mounted in .said frameuandiradapted to carry creasing devices, meansfor moving said'bar'to normeansfor moving said bar to normal or in- ,vertedoposition, blocks spaced longitudinally and. laterally relative to said bar and rigidly connected to said f-rame, means. for locking said Ebar. in 1 one iofsaid positions including blocks, and ybarfand means for: simultaneously movingsaid edges into and out of lockingaposition.

In a creasing machine,"=the combination 'of a frame, abarrotatably mounted in said frame and [adapted to carry creasing. de- "V1068; means for moving said bar to normal or-inverted position, blocks spacedv longitudinally and laterally relative to said bar and rigidly connected to said frame, means "for locking said bar in one offsaid positions including] movable wedges insertable between; said-; blocks and bar, and means;v for out of locking position, said blocks and Wedges having cooperatingtapered surfaces. v l. In a creasing machine,the combination of a fr,ame, a barrotatably mounted in said, frame andadapted to carrycreasing, devices, meansf or moving'jsaid bar to normal or {inverted position, blocks spaced plongitudinally and. laterally relative to said bar and "rigidly connected to said frame, means for locking said bar in one'of saidpositions.

l lln' -a ,creasing,n1achine, -the combina f rmal or invertedfpositiomand means "for lockmovable: Wedges "'insertable between said including movable wedges 'insjertable between Jsaid blocks and bar, guides iforrsaid wedges, and means for simultaneously movring sald wedges nto and out of locking posit on.

. V 5. In acreasing machine, the combination of-2a. frame,, a bar rotatablymounted. n sald frame: and adapted .to ,carry creasing de vices, means for moving said bar to, normal of inverted Osition, block sv spacedlongi tudinally an laterally relativeto saidibar and rigidly connectedto said frame,'means for locking saidbar in one-of said positions including movable wedges insertable "between said blocks and bar, a shaft rotatably mounted in said frame, a bell crank lever fixed to said shaft above each of said Wedges,

and a link connecting the endvofeac h' of said levers withrone of said wedges.

In testimony whereof I aflix my signature. 7 JOHN T. ROBINSON. 

